expand the following
Attachments:
Dhinu:
u want solution all 4 questions ??
solution of *
ya
okay
hmm
what we have to find in the last question (9)??
??
hadd ho gyi yaar! saare questions kr liye but jawaab ni de sakta .. -_-
Answers
Answered by
1
6) x-1/x=3
(x-1/x)^2=x^2+2+1/x^2
9=x^2+1/x^2+2
x^2+1/x^2=7
(x^2+1/x^2)^2=x^4+2+1/x^4
49=x^4+2+1/x^4
x^4+1/x^2=47
(x-1/x)^2=x^2+2+1/x^2
9=x^2+1/x^2+2
x^2+1/x^2=7
(x^2+1/x^2)^2=x^4+2+1/x^4
49=x^4+2+1/x^4
x^4+1/x^2=47
wrong ans., 2nd step is wrong ...
Sorry yarr answer is 11
ya!
and thanks for reporting
ur welcome :)
Similar questions